Editing 1419 (section)

=== April&ndash;June ===
* [[April 25]] &ndash; Representatives of the Swiss cantons of [[Canton of Lucerne|Lucerne]], [[Canton of Uri|Uri]] and [[Unterwalden]] begin negotiations in [[Zurich]] with the [[Canton of Bern]] in an attempt to [[Raron affair|prevent the breakup of the Swiss Confederation]]. The negotiations soon fail.<ref name=Zschokke>{{Cite book |title=The History of Switzerland, for the Swiss People |last=Zschokke |first=Heinrich and Emil |publisher=C. S. Francis & Company |year=1855 |url=https://archive.org/details/historyswitzerl00zschgoog|pages=[https://archive.org/details/historyswitzerl00zschgoog/page/n98 78]–81}}</ref>
* [[May 10]] &ndash; In Italy's [[Republic of Florence]], the republic is elevated to the level of an [[Roman Catholic Archdiocese of Florence|archdioese]] by Pope Martin V, who spent 18 months in Florence after being elected by the Council of Constance. In recognition of the hospitality accorded to him, Pope Martin names Bishop [[:it:Amerigo Corsini|Amerigo Corsini]] to be the first Archbishop of Florence.<ref>{{cite book |last=Cappelletti |first=Giuseppe |title=Le chiese d'Italia dalla loro origine sino ai nostri giorni |url=https://books.google.com/books?id=riNXAAAAcAAJ |volume=Tomo decimosesto (16) |year=1861 |publisher=G. Antonelli |location=Venice |language=it |page=568}}.</ref> 
* [[May 14]] &ndash; The Treaty of Torun ends the war between the Teutonic Knights and the Polish and Lithuanian Kingdom.<ref>Malcolm Vale, ''Henry V: The Conscience of a King'' (Yale University Press, 2016) p.270</ref>
* [[May 15]] &ndash; [[Raron affair]]: In Switzerland, The representatives of Lucerne, Uri and Unterwalden leave Zurich and halt further discussion with Bern after failing to win any concessions.<ref name=Zschokke/>
* [[May 29]] &ndash; King [[Henry V of England]] is [[betrothal|betrothed]] to Princess [[Catherine of Valois]], the 17-year-old daughter of King [[Charles VI of France]], in negotiations in the neutral site of [[Pontoise]], north of [[Paris]], during a halt to hostilities in the war between the two kingdoms. Henry and Catherine will marry a little more than a year later, on June 2, 1420.<ref>Charlotte M. Yonge, ''Cameos From English History'' (Macmillan and Co., 1880) p.306</ref>
* [[June 20]] &ndash; The [[Ōei Invasion]] of [[Tsushima Island]], [[Japan]] on orders of King Sejong of [[Joseon Dynasty|Korea]], begins as General Yi Jong-mu leads 227 ships and 17,285 soldiers to come ashore at [[Asō Bay]].<ref name="Sillok">[https://web.archive.org/web/20191105084830/http://sillok.history.go.kr/id/kda_10106020_004 Annals of King Sejong Vol.4 June 20. National Institute of Korean History.]</ref>
* [[June 26]] &ndash; [[Ōei Invasion]]: A Japanese counterattack begins with 3,700 Korean invaders killed over the next six days.<ref>{{cite web|url=https://khirin-ld.rekihaku.ac.jp/rdf/nmjh_kaken_medInterNationalExcange/E5412|archive-url=https://web.archive.org/web/20230616160536/https://khirin-ld.rekihaku.ac.jp/rdf/nmjh_kaken_medInterNationalExcange/E5412|script-title=ja:看聞日記|language=ja|publisher=[[National Museum of Japanese History]]|archive-date=16 June 2023|access-date=16 June 2023}}</ref>